Reflectivities of selected land surface types at 19 and 37 GHz from SSM/I observations

Surface reflectivities for horizontally and vertically polarized emission at 19 GHz and 37 GHz are calculated for two locations over sand deserts, one location each over a rainforest, and a savanna from daytime observations by the Special Sensor Microwave Imager (SSM/I) on board the DMSP-F8 satellit...

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Bibliographic Details
Published in:Remote sensing of environment 1993-10, Vol.46 (1), p.1-17
Main Author: Choudhury, Bhaskar J.
Format: Article
Language:English
Subjects:
Agronomy. Soil science and plant productions
Animal, plant and microbial ecology
Biological and medical sciences
BOSQUE TROPICAL HUMEDO
BOSQUES
CHANGE
DESERT
DESERTS
DESIERTOS
FORESTS
FORET
FORET TROPICALE HUMIDE
Fundamental and applied biological sciences. Psychology
General aspects. Techniques
LLUVIA
OPTICAL PROPERTIES
PLUIE
PROPIEDADES OPTICAS
PROPRIETE OPTIQUE
RAIN
REFLECTANCE
REMOTE SENSING
SABANAS
SAVANE
SAVANNAS
special sensor microwave imager
TELEDETECCION
TELEDETECTION
Teledetection and vegetation maps
TROPICAL RAIN FORESTS
VEGETACION
VEGETATION
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Summary:Surface reflectivities for horizontally and vertically polarized emission at 19 GHz and 37 GHz are calculated for two locations over sand deserts, one location each over a rainforest, and a savanna from daytime observations by the Special Sensor Microwave Imager (SSM/I) on board the DMSP-F8 satellite for the period January 1988 to December 1989. The calculated reflectivities over the deserts are compared against predictions from the Fresnel equations, while the reflectivities over the rainforest are compared against predictions from a radiative transfer model and with field observations. The temporal variation of the reflectivities over the savanna is discussed in relation to those over deserts and rainforest, and in terms of biomass growth and decay. These SSM/I observations can be used to study seasonal and interannual changes of vegetation cover.
ISSN:0034-4257
1879-0704
DOI:10.1016/0034-4257(93)90028-V